The toddler center — A practical guide to day care for one- and two-year olds: O'Brien,M., Porterfield,J., Herbert-Jackson,E., & Risley,T.R. Baltimore: University Park Press, 1979. Pp. 337. $19.95, paper 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

The toddler center — A practical guide to day care for one- and two-year olds: O'Brien,M., Porterfield,J., Herbert-Jackson,E., & Risley,T.R. Baltimore: University Park Press, 1979. Pp. 337. $19.95, paper

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